Numpy: indexing 1d array

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examples/numpy/indexing_1d_array.py

import numpy as np

a = np.array([1, 1, 2, 3, 5, 8, 13, 21, 34])
print(a)       # [ 1 1 2 3 5 8 13 21 34]

print(a[4])    # 5
print(a[2:5])  # [2 3 5]